Seiko Cal. 4520 - 945

The Seiko 4520-945 represents an important milestone in Seiko's 1975 lineup. It features a Black dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-f88a20a17606]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1975

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